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Wayne County's wastewater treatment plant will soon have to reduce the amount of phosphorus it dumps into the Detroit River.

It's part of the state's plan to lower phosphorus levels in Lake Erie to control cyanobacteria blooms.

Bill Creal is with the Michigan Department of Environmental Quality. He says the new permit for Wayne County will be the same as the permit given to Detroit Water and Sewerage last year, which was more successful at reducing phosphorus than anyone envisioned.

Another severe algal bloom will hit western Lake Erie later this summer, according to environmental scientists from the University of Michigan and the National Oceanic and Atmospheric Administration.

Last August, high levels of cyanobacteria shut down Toledo's drinking water supply.

Heavy rains in June have set up conditions for another severe bloom, ranking between an 8.1 and 9.5 on a 10-point scale. Any bloom greater than a 5.0 is of concern. Scientists say they can't predict whether there will be another "Toledo event," as that depends on how the bloom develops.